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This patch affects BME280 and BMP280. The readout of the calibration data is moved to the probe function. Each sensor data access triggered reading the full calibration data before this patch. According to the datasheet, Section 4.4.2., the calibration data is stored in non-volatile memory. Since the calibration data does not change, and cannot be changed by the user, we can reduce bus traffic by reading the calibration data once. Additionally, proper organization of the data types enables removing some odd casts in the compensation formulas. Signed-off-by: Stefan Tatschner <stefan.tatschner@gmail.com> Tested-by: Andreas Klinger <ak@it-klinger.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.